Who was Issac Newton?

Sir Isaac Newton PRS (25 December 1642 - 20 March 1726/27) was an English mathematician, physicist, astronomer, theologian, and author (described in his own day as a "natural philosopher") who is widely recognised as one of the most influential scientists of all time and as a key figure in the scientific revolution.

father of classical physicss

Explanation:

classical physics also known as electo magnetic theory states that

a particle will always act as a particle and a wave will always act as a wave the speed of motion is relatively small bodies considered under classical physics are relatively large